It's up to you.. I don't use any of the backup mods since I backup my sites using FTP and mySQL or cron jobs.. Take a read through the support thread and then decide.. You might also contact your host and see if they can help you with backups..
That said, the subject of backups is off topic for this support thread.. If you want to ask questions about backup, check out the forum and post your questions elsewhere on the forum where appropriate..
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